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14

Index Definition

. Arrays and collections that contain values of the above types (including null). Indexes ... are all the unique values in the indexed field (or arrays of values in composite indexes), in
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GROUP BY and HAVING clauses

GROUP BY SUBSTRING(c.name, 1, 1); The query returns Object[] arrays of length 3, in which the first
9

JPA Criteria API Queries

in the following page sections: SELECT clause (select, distinct, multiselect, array, tuple, construct
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JPA Query Structure (JPQL / Criteria)

, multiselect, array, tuple, construct). Criteria FROM (from, join, fetch). Criteria WHERE (where). Criteria
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[ODB1] Chapter 9 - ObjectDB Explorer

an initial value and arrays require specifying an array length. Click the "OK" button to construct
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javax.jdo.JDOEntityManager

void deletePersistentAll(Object... pcs) Delete an array of instances from the data store. Delete an array of instances from the data store. Parameters: pcs - a Collection of persistent instances ... See Also: evict(Object pc) void evictAll(Object... pcs) Mark an array of instances as no longer needed in
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javax.jdo.PersistenceManager

- a persistent instance Since: JDO 1.0 void deletePersistentAll(Object... pcs) Delete an array of instances from the data store. Delete an array of instances from the data store. Parameters: pcs ... ) void evictAll(Object... pcs) Mark an array of instances as no longer needed in the cache. Mark
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javax.jdo.JDOOptimisticVerificationException

array contains an exception for each instance that failed the optimistic verification. Since: JDO 1 ... will have its own Exception. Returns: the nested Throwable array. Since: JDO 1.0 StackTraceElement ... (). Provides programmatic access to the stack trace information printed by printStackTrace(). Returns an array
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javax.jdo.JDOException

Exceptions. It contains an optional detail message, an optional nested Throwable array ... will have its own Exception. Returns: the nested Throwable array. Since: JDO 1.0 StackTraceElement ... (). Returns an array of stack trace elements, each representing one stack frame. The zeroth element
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javax.jdo.JDOUserCallbackException

the problem, each failed object will have its own Exception. Returns: the nested Throwable array. Since: JDO ... by printStackTrace(). Returns an array of stack trace elements, each representing one stack frame. The zeroth element of the array (assuming the array's length is non-zero) represents the top

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

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